Imprdvewte nt in -rotary



2 Sheets-Sheet 1. 8., D., & J. BARBOW. Rotary Engine and Pump No. PatenZzg G/H K I Z H WITNESSES: INVBNTOR: 4% 4? MW .Jww w ma ATTORNEYS.

2 Sheets-Sheet 2.

8., D., 80 J. BARROW. Rotary Engine and Pump. No. 222,439. Patented Dec.9,1879.

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INVENTOR WITNESSES: l 4 J gamma Mymw% wmfl ATTORNEYS.

SAMUEL BARRO'VV, 'DAVFD-BA RROW, AND *UAOOB 'BARRONV, OF YVINDFALL,

INDIANA.

| MPRGV'E-MENT IN R OFARY EFENGIINPE-SJAN o PUM PS.

Specification forming part fofLetters Patcn'tNo. =2-2'2-i4 39, (latedDeceinber 9, 1879 application filed To all whom it may concern *Beit known that we, SAMUEL B-AR'ROW, DA- VID BARROW, andJAcoBBARRow,o'fWind fall, in the county of- Tipton and "State ofInt-heinventionconsistsin certain'nov'el details of construction andcombination; which will be described in connection with the accompanyingdrawings and" pointed out in the claims.

, In-the drawings,- Figure l is a side elevation of the engine. Fig. 2is a vertical cross-section on line a; a; of Fig. 1. Fig. 3 is a sideelevation, reverse of Fig. 1', andwith the side plate of the caseremoved. Fig.4 is a side view of the wheel detachedyand with one sideremoved to show the operating mechanism of the pistons. Fig.5 is aninside view of the plate removed in Fig. 4. Figs. 6 to 12 representdetails of construction of the pistons and their packing.

Similar letters of refercnceindicate correspondin g parts.

A is the case of the engine, having a circular aperture, a, and fittedwith the side plates, 1) 0,

between which is 'fitted the wheel B, eccentric.

to the aperture a. Thewh'eel B is sustained at one side by a hollowgudgeon, d, entering plate 0, and at the opposite side by the shaft 6,that is connected to the wheel and extends through plate I) and througha box on the yoke f. This shaft 0 carries a-pulley, g, for taking powerfrom the engine, or for driving the wheel B by a separate motor when theapparatus is used as a pump. The side plates, b c, are each formed withan annular slot concentric with wheel B, but of smallerdiameter, inwhich slots are metal packing-rings h, for holding packing, that ispressed in contact with the sides of the wheel by set-screws 1'. Withinthe circumference of these packing-grooves the inner surfaces of theplates 1) 0 are recessed to receive the sides of the wheel B, which isformed with a rabbet around its edges to correspond. This constructiongives a tight packin g, andpcrmitsrenewal of the packing withoutreinoving the side plates; Zr 0.

As shownin Fig. 3, thewheel B is in contact at one point initscircuinference with the "Side of the aperture or steamway a, and atthis point th'ereisa inetal packing, is, that is adjusted by a screw,l,'fro1n the outside of the case.

anm aresteam-portsat opposite sides of the packing-7c, an'd nMare-grooves in theside of "the steamway, which permit the exhaust of-steam andthemhange of pressure from one piston to th'e other, ashereinafter described.

I The admission ofsteam is regulated by valves "cont-ained in t hesteamw'ays 0 0, both of which communicate with both portsm m, and arecut off from either 'port" by valves 19 1;, which are fitted to beoperated from the outside by hand. The-'steamway 0 is the inlet forsteam, and o the exhaust, and the valves are changed acejordi'n g tothedirect-ion inwhich the engine is to run.

The wheel B consists of a ring portion, 1', (see Figs. at and 5,) formedwith two radial slots at opposite sides, which form boxes for thepistons s, and the sides of the ring are covered by the plates tt,.which inclose the operating mechanism of the pistons, and are alsogrooved at the inner sides for the pistons s. The pistons s are attachedupon the outer ends of rods or arms a, that pass through tubular guidesa, which contain packing, and the said arms a are connected at theirinner ends to a cross-head, '0, that moves against the slidcways s" onplate f. The connections are made by right and left handed screw boltsand nuts, which permit adjustment to regulate the position and movementof the pistons. The pistons s are operated by a crank -arm, to, that ison the end of a shaft, a, (see Figs. 2 and 4,) the crank-pin of whicharm carries a slide-block, b, that moves freely in a slideway that isformed in the side of head '0. The shaft a passes through the hollowaxis d of wheel B and through a plate, 0. The portion of shaft a inplate 0 is squared to fit the correspondingly-shapcd aperture of plate0', and at its outer end the shaft a is fitted with a nut for retainingit in place. By this construction the shaft a remains stationary, and

the revolution of the wheel B will cause radial movement of the pistonsat the proper time, so that the end of each piston conforms to thecircle of the steamway a.

The construction of pistons s and manner of packing them are shown inthe figures from 6 to 12. Each piston is grooved at its outer edge andsides to receive the metal packingstrips (1, which are pressed outwardin contact with the sides of the steamway by the pressure of steam,which has access behind the packing by an opening and passage, 6, at theside of the pistons, and this outward movement is limited by an inclinedlug or flange, f, that is formed on each packing-strip d. The lugs fserve also to prevent steam escaping at the back of the pistons.

As the engine is to be run in either direction, there is an opening andpassage, 6, at each side of the pistons. To prevent steam passingthrough, a partition, 9, is fixed in the packinggroove, projecting intoa groove in the packing, thereby separating one passage 6 from theother.

At the top of case A are oil-cups h, by which the interior parts arelubricated, and at the bottom is a cock, t, for permitting escape ofwater. The side plate b of case A is formed with an opening, it, and theside plate t of wheel B with openings 1, through which openin gs accessmay be had to adjust the pistons s.

In operation, the steam enters by the passage o to either port m or m,as the valves 12 are set, and the exhaust goes out by the other port mor m to the passage 0.

The steam escapes over the end of the piston s that is under pressure assoon as the piston reaches the groove n or n, and until that point isreached the live steam passes over the top of the other piston s by theother groove n or a. As soon as the exhaust commences the pressure istaken upon the piston nearest to the live-steam port.

In using the above apparatus as a pump, it is to be driven by a separatemotor, and the passages o 0 connected with suction and discharge pipes.Each piston will act to fill the space behind it by exhaustion of theair, and to force out the water in front.

This construction furnishes an engine and pump of durable constructionthat can be readily and tightly packed, and which may be taken apartwith facility for repairs. The apparatus is also adapted for use as ablower, and will in that case be driven by a separate motor.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- I 1. In a rotary engine and pump, incombination with the case A, having slotted and recessed side plates, bc, the wheel B, formed with rabbeted edges, the packing-ring h, andset-screws z, substantially as described and shown, and for the purposesspecified.

2. In a rotary engine, the combination of the pistons s, the slottedring 1", and the plates t t, grooved on the inner sides, as shown anddescribed.

SAMUEL BARROW. DAVID BARROW. JACOB BARROW.

Witnesses:

PERRY BEHYMER, A. ELLis.

